19971777

素因数分解:

$3^1\times 7^1\times {\mathrm{229}}^1\times {\mathrm{4153}}^1$

素因数の和:4392

約数の個数: 16

約数和(自身を含む): 30573440

約数和(自身を除く): 10601663

約数列:

[1, 3, 7, 21, 229, 687, 1603, 4153, 4809, 12459, 29071, 87213, 951037, 2853111, 6657259, 19971777]

約数ペア:

[(1, 19971777), (3, 6657259), (7, 2853111), (21, 951037), (229, 87213), (687, 29071), (1603, 12459), (4153, 4809)]